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Salix pseudomyrsinites Andersson
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Salix pseudomyrsinites Andersson
firmleaf willow

General Information
Symbol: SAPS8
Group: Dicot
Family: Salicaceae
Duration: Perennial
Growth Habit : Shrub
Native Status : AK   N
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Native Status:
lower 48 status L48    Alaska status AK    Hawaii status HI    Puerto Rico status PR    Virgin Islands status VI    Navassa Island NAV    Canada status CAN    Greenland status GL    Saint Pierre and Michelon status SPM    North America NA   




Symbol Scientific Name
SAMYC Salix myrtillifolia Andersson var. cordata (Andersson) Dorn
SAMYP4 Salix myrtillifolia Andersson var. pseudomyrsinites (Andersson) C.R. Ball ex Hultén
SANOP4 Salix novae-angliae Andersson var. pseudomyrsinites (Andersson) Andersson
SAPSC Salix pseudocordata (Andersson) Rydb. var. cordata (Andersson) C.R. Ball


Click on a scientific name below to expand it in the PLANTS Classification Report.
Rank Scientific Name and Common Name
Kingdom Plantae – Plants
Subkingdom Tracheobionta – Vascular plants
Superdivision Spermatophyta – Seed plants
Division Magnoliophyta – Flowering plants
Class Magnoliopsida – Dicotyledons
Subclass Dilleniidae
Order Salicales
Family Salicaceae – Willow family
Genus Salix L. – willow
Species Salix pseudomyrsinites Andersson – firmleaf willow

Subordinate Taxa

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Lady Bird Johnson Wildflower Center Native Plant Information Network (SAPS8)



Source Large Mammals Small Mammals Water Birds Terrestrial Birds


Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Description of Values

Value Class Food Cover

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Following modified from Flora of North America
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FNA Vol. 7 Page 25, 101, 102, 110 , 111, 149 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 7 | Salicaceae | Salix

57. Salix pseudomyrsinites Andersson, Öfvers. Kongl. Vetensk.-Akad. Förh. 15: 129. 1858. (as pseudo-myrsinites).

Tall blueberry willow

Salix myrtillifolia Andersson var. cordata (Andersson) Dorn; S. myrtillifolia var pseudomyrsinites (Andersson) C. R. Ball ex Hultén; S. novae-angliae Andersson var. cordata Andersson

Plants 1-7 m. Stems: branches gray-brown, red-brown, or yellow-brown, glaucous to strongly so (slightly to highly glossy), villous to glabrescent; branchlets gray-brown, red-brown, yellow-brown, or yellow-green, (not or weakly glaucous), pilose, densely villous, or tomentose. Leaves: stipules rudimentary or foliaceous on early ones, foliaceous on late ones, (0.6-8 mm), apex acute or obtuse; petiole shallowly to deeply grooved adaxially, 2.5-8 mm, glabrous or villous adaxially; largest medial blade (sometimes amphistomatous), narrowly to broadly elliptic, oblong to oblanceolate or obovate, 32-109 × 10-47 mm, 1.8-4.8 times as long as wide, base convex, cuneate, or subcordate, sometimes cordate, margins flat, entire, crenate, or serrulate, apex acute, convex, or acuminate, abaxial surface not glaucous, glabrous or pilose, hairs (white, sometimes also ferruginous), wavy, adaxial slightly glossy, glabrous, pilose, pubescent, moderately densely short-silky, or velvety, midrib remaining pilose or short-hairy, (hairs sometimes also ferruginous, straight and geniculate); proximal blade margins serrulate or entire; juvenile blade sometimes reddish or yellowish green, abaxially glabrous, or midrib sparsely pubescent, or densely villous or short-silky, hairs white, sometimes also ferruginous. Catkins flowering as leaves emerge; staminate stout, 16.5-35.5 × 7-15 mm, flowering branchlet 0.5-12 mm; pistillate moderately or densely flowered, slender or stout, 10.5-68 × 5-20 mm, flowering branchlet 0.5-10 mm; floral bract brown, black, tawny, or bicolor, 0.6-1.1 mm, apex retuse, abaxially hairy, hairs long-wavy or curly. Staminate flowers: adaxial nectary oblong square, 0.2-0.4-0.6 mm; filaments distinct, glabrous; anthers purple turning yellow, 0.4-0.7 mm. Pistillate flowers: adaxial nectary square or oblong, 0.2-0.4 mm, shorter than stipe; stipe 0.8-1.4 mm; ovary pyriform, glabrous, beak slightly bulged below styles; ovules 11-18 per ovary; styles 0.4-1.6 mm; stigmas flat, abaxially non-papillate with rounded tip, or 2 plump lobes, 0.16-0.24-0.32 mm. Capsules 4.4-6.4 mm. 2 n = 76.

Flowering early May-early Jul. Shores of lakes and streams, dwarf-birch thickets, fens, marl bogs, rarely in treed bogs; 40-1000 m; Alta., B.C., Man., N.W.T., Nunavut, Ont., Sask., Yukon; Alaska.

Salix pseudomyrsinites occurs in Nunavut on Akimiski Island in James Bay.

Salix pseudomyrsinites and S. myrtillifolia , although sometimes treated as conspecific (R. D. Dorn 1975), deserve species rank. They differ in chromosome number and are distinct in habit, habitat, and general appearance, including glossiness of leaves, as well as a number of technical characteristics (L. A. Viereck and E. L. Little Jr. 1972; G. W. Argus 1973, 1997). There is no field evidence of hybridization, but some herbarium specimens appear to be intermediates, having the habit or habitat of one species and the leaf hairiness of the other.

Salix myrtillifolia is distinguished from S. pseudomyrsinites by having shrubs low, decumbent, 0.1-0.6 m, rarely to 1 m, of treed bogs and fens, juvenile and mature leaves typically glabrous, stipules usually rudimentary, 0.2-1.8(-5) mm, and styles often shorter, 0.3-0.7 mm; S. pseudomyrsinites has shrubs tall, erect, 1-7 m, of riparian habitats, juvenile leaves pubescent with hairs persisting on mature leaves, at least on adaxial midrib, stipules usually prominent and foliaceous, 0.6-8 mm, and styles often longer, 0.4-1.6 mm.

The nomenclature of these species is confusing. When treating them as varieties E. Hultén (1968) used the name Salix myrtillifolia var. pseudomyrsinites and R. D. Dorn (1975) used the name S. myrtillifolia var. cordata . At the species level, the name S. novae-angliae was used (L. A. Viereck and E. L. Little Jr. 1972; G. W. Argus 1973), but that name is illegitimate (Dorn) and is replaced by S. pseudomyrsinites (Argus 1997).


Salix pseudomyrsinites forms natural hybrids with S. barrattiana .

Salix pseudomyrsinites × S. barrattiana is a rare hybrid that combines the characters of the two parents.

Updated: 2019-10-22 01:56:20 gmt
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